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16fb608bee
Also warn duplicate file paths in sum files. Fixes https://forum.rclone.org/t/rclone-check-sum/25566/45
115 lines
3.5 KiB
Go
115 lines
3.5 KiB
Go
package hashsum
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import (
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"context"
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"fmt"
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"os"
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"github.com/pkg/errors"
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"github.com/rclone/rclone/cmd"
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"github.com/rclone/rclone/fs"
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"github.com/rclone/rclone/fs/config/flags"
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"github.com/rclone/rclone/fs/hash"
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"github.com/rclone/rclone/fs/operations"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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)
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// Global hashsum flags for reuse in hashsum, md5sum, sha1sum
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var (
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OutputBase64 = false
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DownloadFlag = false
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HashsumOutfile = ""
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ChecksumFile = ""
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)
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func init() {
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cmd.Root.AddCommand(commandDefinition)
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cmdFlags := commandDefinition.Flags()
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AddHashFlags(cmdFlags)
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}
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// AddHashFlags is a convenience function to add the command flags OutputBase64 and DownloadFlag to hashsum, md5sum, sha1sum
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func AddHashFlags(cmdFlags *pflag.FlagSet) {
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flags.BoolVarP(cmdFlags, &OutputBase64, "base64", "", OutputBase64, "Output base64 encoded hashsum")
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flags.StringVarP(cmdFlags, &HashsumOutfile, "output-file", "", HashsumOutfile, "Output hashsums to a file rather than the terminal")
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flags.StringVarP(cmdFlags, &ChecksumFile, "checkfile", "C", ChecksumFile, "Validate hashes against a given SUM file instead of printing them")
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flags.BoolVarP(cmdFlags, &DownloadFlag, "download", "", DownloadFlag, "Download the file and hash it locally; if this flag is not specified, the hash is requested from the remote")
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}
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// GetHashsumOutput opens and closes the output file when using the output-file flag
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func GetHashsumOutput(filename string) (out *os.File, close func(), err error) {
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out, err = os.Create(filename)
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if err != nil {
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err = errors.Wrapf(err, "Failed to open output file %v", filename)
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return nil, nil, err
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}
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close = func() {
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err := out.Close()
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if err != nil {
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fs.Errorf(nil, "Failed to close output file %v: %v", filename, err)
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}
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}
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return out, close, nil
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}
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var commandDefinition = &cobra.Command{
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Use: "hashsum <hash> remote:path",
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Short: `Produces a hashsum file for all the objects in the path.`,
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Long: `
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Produces a hash file for all the objects in the path using the hash
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named. The output is in the same format as the standard
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md5sum/sha1sum tool.
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By default, the hash is requested from the remote. If the hash is
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not supported by the remote, no hash will be returned. With the
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download flag, the file will be downloaded from the remote and
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hashed locally enabling any hash for any remote.
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Run without a hash to see the list of all supported hashes, e.g.
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$ rclone hashsum
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` + hash.HelpString(4) + `
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Then
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$ rclone hashsum MD5 remote:path
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Note that hash names are case insensitive and values are output in lower case.
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`,
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RunE: func(command *cobra.Command, args []string) error {
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cmd.CheckArgs(0, 2, command, args)
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if len(args) == 0 {
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fmt.Print(hash.HelpString(0))
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return nil
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} else if len(args) == 1 {
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return errors.New("need hash type and remote")
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}
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var ht hash.Type
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err := ht.Set(args[0])
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if err != nil {
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fmt.Println(hash.HelpString(0))
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return err
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}
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fsrc := cmd.NewFsSrc(args[1:])
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cmd.Run(false, false, command, func() error {
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if ChecksumFile != "" {
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fsum, sumFile := cmd.NewFsFile(ChecksumFile)
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return operations.CheckSum(context.Background(), fsrc, fsum, sumFile, ht, nil, DownloadFlag)
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}
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if HashsumOutfile == "" {
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return operations.HashLister(context.Background(), ht, OutputBase64, DownloadFlag, fsrc, nil)
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}
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output, close, err := GetHashsumOutput(HashsumOutfile)
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if err != nil {
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return err
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}
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defer close()
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return operations.HashLister(context.Background(), ht, OutputBase64, DownloadFlag, fsrc, output)
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})
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return nil
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},
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}
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